britt support cat 9710

ebbritt engineering

(205) 951-5691(205) 951-5605 FAX

www.brittengineering.com

TheFRPSpecialist

EXPERIENCE FIRST

P

I

P

E

S

U

P

P

O

R

T

S

2010

Engineered Supports for Fiberglass & Non-Metallic Pipe CatalogFiberglass Pipe Design Manual

C copyright 2010. All rights reserved.

Britt Pipe SupportsP.O.Box 101267Birmingham, Al

35210

http://www.brittengineering.com/impact_movie.html

Cat. 9710

SUPPORT NO. REV. DESCRIPTION SIZE RANGE

FRP PIPE SUPPORT STANDARDS

BE-5

SUPPORT NO.

PIPE SUPPORT INDEX

BE-20SBE-20BE-30BE-30KBE-50BE-50RHBE-50GBE-50RHBE-60BE-60GBE-60ABE-60HBE-60RHBE-60SBE-60VBE-70BE-70GBE-70HBE-70RHBE-80BE-80SBE-90BE-90KBE-100BE-110BE-110KBE-120BE-120CBE-120RHBE-GUIDE CLIPSBE-130

0000000000000000000000000000000

2" TO 10"2" TO 10"2" TO 36"2" TO 36"2" TO 36"2" TO 30"2" TO 30"2" TO 30"2" TO 30"2" TO 30"2" TO 30"2" TO 30"2" TO 30"2" TO 30"2" TO 30"2" TO 30"2" TO 30"2" TO 30"2" TO 30"2" TO 4"2" TO 4"2" TO 36"2" TO 36"2" TO 12"2" TO 36"2" TO 36"2" TO 20"2" TO 36"2" TO 36"2" TO 36"2" TO 36"

CRADLE SUPPORTSHOE SUPPORTSHOE SUPPORTINSULATED SHOE SUPPORTROD HANGER CLAMP SUPPORTROD HANGER HARDWAREROD HANGER CLAMP SUPPORT WITH BRACEROD HANGER HARDWARECOMPONENT SUPPORTCOMPONENT SUPPORT WITH GUIDESCOMPONENT ANCHORCOMPONENT HANGER SUPPORTROD HANGER HARDWARECOMPONENT STANCHION SUPPORTCOMPONENT RISER SUPPORTRISER CLAMP SUPPORTRISER CLAMP SUPPORT WITH GUIDESROD HANGER RISER CLAMP SUPPORTROD HANGER HARDWAREGUIDE SUPPORTGUIDE SUPPORTGUIDE SUPPORTINSULATED GUIDE SUPPORTLIGHT DUTY ANCHORHEAVY DUTY ANCHORINSULATED PIPE ANCHORHANGERHANGERHANGER HARDWAREGUIDE CLIP HARDWARESHEAR COLLARS


(205) 951-5691email: [email protected]

Britt Pipe Supports.P.O.Box 101267Birmingham, Al

35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400400800800900900

1.251.251.25

222

PIPE SUPPORT DATA

LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A B C L


BE-20S

BE-20S BE-20S w Strap

SUPPORT NO.

Features

Application

Provides full 180o support.

Extended length provides margin for extended spans.

Full elastomer contact to eliminate chafing.

Provides full bearing support.

1) Fig.30 recommended for 6" and above.

Used where horizontal pipe movements mayoccur and where support structure is belowpipe.

L

L

ELASTOMERIC LINEROR ALTERNATEMATERIAL


SS STRAP(Extra)

PIPE O.D.

PIPE O.D.

C

CRADLE SUPPORT


888

121212

NOTES



35210


PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400400800800900900

888

121212

PIPE SUPPORT DATA



BE-20

SUPPORT NO.

Features

Application





1) Fig.30 recommended for 6" and above.

2) Top of Steel to Bottom of Pipe dimension may

be modified.


L


PIPE O.D.C

BOP

TOS

1-5/8"or as specified

SHOE SUPPORT

1.251.251.25

222


NOTES


35210

T

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400600800

120016002000240030753385400047106750852511550

888

1212121214141414162020

1-1/41-1/41-1/4

22222222222

PIPE SUPPORT DATA



BE-30

SUPPORT NO.

Features

Application






be modified.


T

B.O.P

1-5/8"or as specified

PIPE O.D.C

SHOE SUPPORT



NOTES



35210

L

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

61061061061011301810271027103770377049606833800011630

PIPE SUPPORT DATA

LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL


ROD HANGER CLAMP SUPPORT BE-50

SUPPORT NO.

Features

Application

1) Fig.50 and 50K are the same except the 50K has

3/4" slots for insulation banding.

2) SS Banding sold separate in 100' rolls

3) See drawing 50RH for hanger hardware.

L

INSULATION BAND SLOTS(50K ONLY-see Note 1))

G

T

T=OD/2 + 2-7/8"

Used to support FRP pipe where support structure

cannot be installed below pipe. Due to flexibility of FRP

pipe this type of support should not be used exclusively

in long runs of pipe. Anchors and guides should be used

intermittently to control expansion and to reduce

vibration. Can be used on sloping lines.

Provides full 360 degrees support.


Full elastomer contact prevents chafing.

888888

1212121214161616

.625

.625

.625

.625.75.7511

1.131.131.251.381.381.38

A G L Rod


See BE-50RH forRod Assy. Options


NOTES



35210

.375

.375

.375

.625

.625

.625.75.75

.875

.8751

1.251.251.5

Rev1

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400600800

120014501650206531203440405547756835862511750

888

1212121214141414162020

22222222222222

444666688888

1010

PIPE SUPPORT DATA



INSULATED SHOE SUPPORT BE-30K

SUPPORT NO.

Features

Application


be modified.

2) Gussets not required in sizes below 6"

3) Use Fig.110K for Anchor


be modified.


Extended length provides margin for extended spans.Full elastomer contact to eliminate chafing.


Provides easy insulation installment.


L

BOP

TOS

B

INSULATIONBAND SLOTS (30K ONLY)

PIPE O.D.C

4".or as

specified



NOTES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

1234

1234567

1311

1114111

66HEX146299

66290146HEX230253299

Beam AttachmentHD Hex Nut

All Thread RodClevis W Pin

Beam AttachmentWeldless Eye-nutAll Thread Rod

HD Hex nutTurnbuckle w 6" Opening

LH/RH Machine Rod 10" LongClevis W Pin

730730730730

135021603230323044804480590095009500

13800

PIPE SUPPORT DATA NOTES

ROD HANGER LIST - TYPE 1 ROD HANGER LIST - TYPE 2

LOAD RATINGS

ITEM QTY FIG.NO. DESCRIPTION ITEM QTY FIG.NO. DESCRIPTION

DIMENSIONS (INCHES)VERT. AXIAL A C E Rod


ROD HANGER HARDWARE BE-50RH

SUPPORT NO.

1) Two rod assemblies are options. Britt can supply

separately.

2) Figure numbers refer to the Anvil Catalog.

3) Rod load based on Anvil Catalog at 650 FO

Auxiliary Steel

Beam Attachment(Fig.66)

HD Hex Nut (3)

HD Hex Nut (typ)

HD Hex Nut (typ.)

All Thread Rod(Fig.146)


Weldless Eye-nut(Fig.290)

Turnbuckle(Fig.230)

Clevis w Pin(Fig.299)


LH/RH Machine Rod(Fig.253)




35210

.375

.375

.375

.625

.625

.625.75.75

.875

.8751

1.251.251.5

1

2 2

3 3

4

4

5

6

7

Rev1

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

61061061061011301810271027103770377049606833800011630

888888

1212121214161616

3/43/43/43/43/43/411

1-1/81-1/81-1/41-3/81-3/81-3/8

PIPE SUPPORT DATA

LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A G L Rod


ROD HANGER CLAMP SUPPORT W/ BRACE BE-50G

Rev1

SUPPORT NO.

Features

Application

1) Fig.50G and 50GK are the same except the 50GK has

3/4" slots for insulation banding.

2) SS Banding sold separate in 100' rolls

3) See drawing 50GRH for hanger hardware.

Used to support FRP pipe where support structure

cannot be installed below pipe. Due to flexibility of FRP

pipe this type of support should not be used exclusively

in long runs of pipe. Anchors and guides should be used

intermittently to control expansion and to reduce

vibration. Can be used on sloping lines.

Provides full 360 degrees support.



L

G

T

T=OD/2 + 2-7/8"

BRACE TOSTRUCTURE

INSULATION BAND SLOTS(50GK ONLY-see Note 1))


See BE-50GRH forRod Assy. Options

.375

.375

.375

.625

.625

.625.75.75

.875

.8751

1.251.251.5


NOTES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

1234

89

10

123456789

10

1311

112

1114111112

66HEX146299

55140Bolt

66290146HEX23025329955

140



Welding LugBritt Strut Brace

Bolt w Nut



LH/RH Machine Rod 10" LongClevis W PinWelding Lug

Britt Strut BraceBolt w Nut

730730730730

135021603230323044804480590095009500

13800



LOAD RATINGS


DIMENSIONS (INCHES)VERT. AXIAL A C E Rod



SUPPORT NO.


separately.



Auxiliary Steel


HD Hex Nut (3)

HD Hex Nut (typ)





Turnbuckle(Fig.230)




2" Dia.Schedule 80 Pipeor Equal

2-1/2" Dia.Schedule 40 Pipeor Equal

12" Min.




35210

.375

.375

.375

.625

.625

.625.75.75

.875

.8751

1.251.251.5

Rev1

2

2

33

4

4

8

5

96

7

1

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400600800

1200160020002550315040205090636088201100014000

300030003000110001100011000110001000010000900090008000

1500015000

777

1212121215151515151919

910.51214

16.5192225

27.25293136

42.7550

777

14141414202020202023

27.38

PIPE SUPPORT DATA

LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A H L W


COMPONENT SUPPORT BE-60

SUPPORT NO.

Features

Application

Used to support valves, regulators, flow meters, or other

components used in piping systems.

Matches standard 150# Flanges.

Designed to prevent local overstress of FRP

pipe due to component loads and moments.

1) "H" dimension may be change but load rating would

change.

2) 12" and largers are scalloped to provide clearance

for the ing hub reinforcement specified in PS-15-69


NOTES



35210

L

W12" AND LARGER ARE SCALLOPED TOPROVIDE CLEARANCE FOR THE RINGHUB REINFORCEMENT SPECIFIED INPS-15-69

H

Flat Washer

Lock Washer

Flange SpotFace Area

Lock Washer

Mfg. Recommended Gasket

HD Hex Nuts

Component Support60A, 60H, 60S, 60V

Hex Nut

Flange Valve

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400600800

1200160020002550315040205090636088201100014000

300030003000110001100011000110001000010000900090008000

1500015000

777

1212121215151515151919

PIPE SUPPORT DATA



COMPONTENT SUPPORT W/ GUIDES BE-60G

SUPPORT NO.

Features

Application







H

1"x1"x1/4"x4" AngleSee Fig. GA1

Guide ClipSee Fig. GC1

3/1

6

3 SidesTyp.

1/8"CLR.(TYP.)

1) Gude Clips or Guide Angles are used to restrict

lateral and vertical movement.


change.



910.51214

16.5192225

27.25293136

42.7550

777

14141414202020202023

27.38


NOTES



35210

L

Flat Washer

Lock Washer


Lock Washer


HD Hex Nuts


Hex Nut

Flange Valve

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400600800

1200160020002550315040205090636088201100014000

300030003000110001100011000110001000010000900090008000

1500015000

777

1212121215151515151919

PIPE SUPPORT DATA



COMPONENT SUPPORT ANCHOR BE-60A

SUPPORT NO.

Features

Application

Used to support valves, regulators, flow meters, or

other components used in piping systems.




L


H3/1

6

2 SidesTyp.


change

2) 60A can be anchor by welding or bolting.



910.51214

16.5192225

27.25293136

42.7550

777

14141414202020202023

27.38


NOTES



35210

Flat Washer

Lock Washer


Lock Washer


HD Hex Nuts


Hex Nut

Flange Valve

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

61061061061011301810271027103770377049606230830011630

.563

.563

.563

.563688.813.751

1.131.131.251.251.5

1.75

.375

.375

.375

.375.5

.625.75.75

.875

.8751

1.251.251.5

45.5

6.257.5

8.8710.1311.7512.8614.6315.3816.75

1922.5

25.86

PIPE SUPPORT DATA

LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A T G Rod


COMPONENT HANGER SUPPORT BE-60H

SUPPORT NO.

Features

Application






Cannot be used as an anchor


2) 12" and larger are scalloped to provide clearance

for the ring hub reinforcement specified in

PS-16-69

3) Two hangers may be required with long components.

T

G

12" AND LARGER ARE SCALLOPED TOPROVIDE CLEARANCE FOR THE RINGHUB REINFORCEMENT SPECIFIED INPS-15-69



NOTES



35210

Flat Washer

Lock Washer


Lock Washer


HD Hex Nuts


Hex Nut

Flange Valve

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

730730730730

135021603230323044804480590095009500

13800

.375

.375

.375

.375.5

.625.75.75

.875

.8751

1.251.251.5



LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A C E Rod



SUPPORT NO.


separately.



Auxiliary Steel


HD Hex Nut (typ)

HD Hex Nut (typ.)




Turnbuckle(Fig.230)







35210

1234

1234567

1311

1114111

66HEX146299

66290146HEX230253299







22

1

33

4

4

5

6

7

Rev1

Flat Washer

Lock Washer


Lock Washer


All Thread

HD Hex Nuts


Hex Nut

Flange Valve

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400400400600

14001600200030003300390046006600830011630

888

1010101212151515151515

7.57.57.5

14.514.514.514.5

20.6320.6320.6320.6320.63

2327.38

PIPE SUPPORT DATA

NOTES

LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A B H W


COMPONENT STANCHION SUPPORT BE-60S

SUPPORT NO.

Features

Application






Cannot be used as an anchor

1) See drawing FC for flange connection.



PS-16-69

H

WW

12" AND LARGER ARE SCALLOPED TOPROVIDE CLEARANCE FOR THE RINGHUB REINFORCEMENT SPECIFIED INPS-15-69




35210

Flat Washer

Lock Washer


Lock Washer


HD Hex Nuts


Hex Nut

Flange Valve

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

1152003255801150164025503150402043004300430043004300

7.59

10.512.515

17.520.522.525

26.529

33.540.547.5

44446666666666

PIPE SUPPORT DATA

NOTES

LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A B C W



COMPONENT RISER SUPPORT BE-60V

SUPPORT NO.

Features

ApplicationUsed to support valves, regulators, flow meters, or other


Matches standard 150# Flanges Provides full

360o support.

May be either T-pole supported, beam or rod supported.

Provides full bearing support for components in vertical

runs of pipe.

1) May serve as anchor by bolting or welding to

structural members.



PS-16-69

C

W



35210


Flat Washer

Lock Washer


Lock Washer


All Thread

HD Hex Nuts


Hex Nut

Flange Valve

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400400400600

140028003100320038004300430065008700

14900

22333334566668

11111112222222

44444444444444

PIPE SUPPORT DATA

NOTES

LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A C H Type


RISER CLAMP SUPPORT BE-70

SUPPORT NO.

Features

Application



Supports long vertical runs of pipe.


1) Shear Collar must be used, See Fig.130 (sold

separately)

2) Clip Angles can be used if needed. Supplied

separately

FRP SHEAR COLLAR

(see fig.130)

FRP SHEAR COLLAR

(see fig.130)

TYPE 1

TYPE 2

PIPE O.D.

PIPE O.D.

C

C

H

H

Used to support vertical runs of pipe to preventbuckling and overstress of horizontal sectionsof the pipe run.



2x2x1/4”CLIP ANGLES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400400400600600600600

1200120016001500150021001900

33333333344466

11111111111122

66666666666666


LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A C H Type


RISER CLAMP SUPPORT W/ GUIDES BE-70G

SUPPORT NO.

Features

Application


separately)

2) Clip Angles not supplied unless requested.

TYPE 1

TYPE 2


SLEEVE

SLEEVE

ANGLE 1x1x1/4FIELD WELD TOSLEEVE OR AUX

STEEL

ANGLE 1x1x1/4FIELD WELD TOSLEEVE OR AUX

STEEL

FRP SHEAR COLLAR(see fig. 130)


PIPE O.D.

PIPE O.D.

C

C

H

H

1/8 CLR.(TYP)

1/8 CLR.(TYP)

Provides full 360o support and guiding of pipe


Stabilizes long vertical runs of pipe.




NOTES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400400400600

140018002300260045004500450086008000

10000

33333456666666

.375

.375

.375

.625

.625

.875

.875

.8751.251.251.251.251.251.25

66666666666666

.437

.437

.437

.437

.563

.563

.687

.687

.875

.875

.8751.1251.1251.25


LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL C G H Rod


ROD HANGER RISER CLAMP SUPPORT BE-70H

SUPPORT NO.

Features

Application


separately)

2) See drawing BE-70RH for Hardware.

TYPE 1

TYPE 2


Provides full 360o support and guiding of pipe


Stabilizes long vertical runs of pipe.





PIPE O.D.

PIPE O.D.

C

C

G

G

1-1/2 TYP.

1-1/2 TYP.

H

H



NOTES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400400400600

140018002300260045004500450086008000

10000



LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A C E Rod



SUPPORT NO.


separately.



separately)

Auxiliary Steel


HD Hex Nut (typ.)

HD Hex Nut (typ)




Turnbuckle(Fig.230)







35210

.375

.375

.375

.625

.625

.875

.875

.8751.251.251.251.251.251.25

1234

1234567

1311

1114111

66HEX146299

66290146HEX230253299







22

1

33

4

4

5

6

7

Rev1

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400600800

1.251.251.25

888




GUIDE SUPPORT BE-80

SUPPORT NO.

1) Clip Angles not supplied unless requested. See

GA1.

2) Use BE-90 for 6" and above.


be modified.

L

1-5/8" std.or as specified

B.O.P.

PIPE O.D.C

1/8"CLR.(TYP.)

Features

Application

Provides full 360o support.Full elastomer contact to eliminate chafing.Allows axial movement while providing lateralrestraint.

Used to support and stabilize pipe betweenfull pipe anchors to prevent buckling andoverstress, or to restrain lateral movement dueto expansion.

1"x1"x1/4"x4" AngleSee Fig. GA1

3/1

6

3 SidesTyp.



NOTES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400600800

120016002000240030753385400047106750852511550

888

1212121214141414162020

1.251.251.25

22222222222




BE-90A

SUPPORT NO.


GA1

2) Guide Clips (GC1) can be used in place of the

Clip Angles (GC1sold separately).

3) Use 80G for 4" and under.


be modified.

Features

Application

GUIDE SUPPORT

B.O.P.

1-5/8"std.or as specified

L

PIPE O.D.C

1/8"CLR.(TYP.)

1"x1"x1/4"x4" AngleSee Fig. GA1OR

3/1

6

3 SidesTyp.


Provides full 360o support.Full elastomer contact to eliminate chafing.Stabilizes long runs of pipe.

Provides full bearing support.Allows axial movement while providing lateralrestraint.




NOTES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400600800

888




BE-80S

SUPPORT NO.

1) Old type support - Recommend use of 80G.

2) Use BE-90 for 6" and above.

3) 2) SS Banding sold separate in 100' rolls

Features

Application

Provides full 360o support.Full elastomer contact to eliminate chafing.Allows axial movement while providing lateralrestraint.


L

3/4 x 0.20 Stainless SteelStrapping (see note 3)

B.O.P

3/8"

1" Clear


Heavy Hex Nuts(4 Req'd)

PIPE O.D.

1/8"Clear(typ.)

GUIDE SUPPORT


NOTES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400600800

120014501650206531203440405547756835852511750

888

1212121214141414162020

1.251.251.25

22222222222




BE-90K

SUPPORT NO.


GA1

2) Guide Clips (GC1) can be used in place of the

Clip Angles (GC1 sold separately).

Features

Application

INSULATED GUIDE SUPPORT

1/8"CLR.(TYP.)

1"x1"x1/4"x4" AngleSee Fig. GA1OR

3/1

6

3 SidesTyp.


Provides full 360o support.Full elastomer contact to eliminate chafing.Stabilizes long runs of pipe.

Provides full bearing support.Allows axial movement while providing lateralrestraint.


LB

B.O.P

INSULATIONBAND SLOTS

4"

PIPE O.D. C



NOTES



35210


L


B.O.P.

PIPE O.D.C

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400600800

1200160020002400

1500220030003000400040004000

6666

121212

2222222




BE-100

SUPPORT NO.

1) Shear Collar must be used for Axial Load,

See Fig.130 (sold separately).

2) Use Fig.110 for pipe sizes above 12"

Features

Application

LIGHT DUTY ANCHOR

3/1

6

Typ.

Provides full 360o support.Full elastomer contact to eliminate chafing.Low profile to prevent bending.

Designed to absorb full anchor loads and fullyrestrain pipe without local overstress.

Used for anchoring long horizontal runs of FRP pipewhere restraint of thermal expansion is required.



NOTES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400600800

120016002000240031253440406047806345866011600

15002200300040007000

102001465020000261002800030370425605000060000

666

1212121214141414162020

22222222222222




BE-110

SUPPORT NO.


See Fig.130 (sold separately).

Features

Application

HEAVY DUTY ANCHOR





B.O.P.


L

PIPE O.D.C3

/16

Typ.

Extended length provides margin for extendedspans.



NOTES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

400400400600

14501650206531203440405547756850866011600

1212121212121214141416202020

22222222222222

44466668888

101010




BE-110K

SUPPORT NO.


See Fig.130 (sold separately)

Features

Application

INSULATED ANCHOR




Extended length provides margin for extendedspans.

LB

B.O.P

INSULATIONBAND SLOTS

4"


PIPE O.D. C

3/1

6Typ.


5501130181040006700

102001465020000261002800030370425605000060000


NOTES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"

6106106106101130181027102710377037704960

666688

1212121214

34.755.757.759.7511.75

1416.2518.3820.6322.75

.375

.375

.375

.375.5

.625

.750

.750

.875

.8751


LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A L T ROD


BE-120

SUPPORT NO.

Features

Application

HANGER




Used to support FRP pipe where support structure cannotbe installed below pipe. Due to flexibility of FRP pipe thissupport should not be used exclusively in long runs ofpipe. To provide stability, pipe guides or anchors shouldbe used intermittently to control expansion and to reducevibration. Used in new installations where support can beslipped on pipe without opening strap.

L

T


2) Use Fig.120C for 24" and above.




NOTES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

61061061061011301810271027103770377049606833800011630

666688

1212121214161616

5.636.137.388.889.8811.75

1314.5

17.1318.2519.8822.3826.1330.13

.375

.375

.375

.375.5

.625

.750

.750

.875

.8751

1.251.251.5


LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A L T ROD


BE-120C

SUPPORT NO.

Features

Application

HANGER




Used to support FRP pipe where support structure cannotbe installed below pipe. Due to flexibility of FRP pipe thissupport should not be used exclusively in long runs ofpipe. To provide stability, pipe guides or anchors shouldbe used intermittently to control expansion and to reducevibration.Used where support cannot be slipped overpipe or where disassembly of support is required.


2) Easy installation if pipe is already installed.

L

T




NOTES



35210

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"

1234

123456

1411

111511

66HEX146299

66290146HEX230253





LH/RH Machine Rod 10" Long

400400400600

140018002300260045004500450086008000

10000

.375

.375

.375

.375.5.5

.625

.625.75.75.75

.875

.8751.25



LOAD RATINGS


DIMENSIONS (INCHES)VERT. AXIAL A B C Rod



SUPPORT NO.

1) Two rod assemblies are options that Britt can supply

separately.


Auxiliary Steel


HD Hex Nut (8)

HD Hex Nut (3)




Turnbuckle(Fig.230)





35210

Rev1

22

1

33

4

5

6

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"


LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A B C D


GUIDE CLIP HARDWARE BE-GUIDE CLIPS

SUPPORT NO.

1) Guide Clips ordered separately from guides

2) Dimensions may be modified to allow for

baseplate thickness.

2.7

51/8"CLR.

(TYP.)

5.2

50

5.2

50

1/8"CLR.(TYP.)

1"

4"

1/8"CLR.(TYP.)

3/1

63/1

6

3 sides

3 sides

GC-1

GC-2

CA-1

Guide Clips limit lateral and vertical. Guide Angles

limit lateral movement where welding on the edge

is acceptable.

Application




35210

FRP Shear CollarFlush with outside diameter

of pipe support.

FRP Shear Collarflush (even)with support

T

TW

W

PIPESIZE

2"3"4"6"8"

10"12"14"16"18"20"24"30"36"


LOAD RATINGS DIMENSIONS (INCHES)VERT. AXIAL A B T W


FRP SHEAR COLLAR BE-130

SUPPORT NO.

1) Installation kit includes FRP roller, resin cup for

mixing, resin, hardener and mat cut to length.

2) Orders less than 4 kits does not include tools.

1. Grind down 1/16" or less of the outside of pipe from the support to the width of the shear collar. Clean

area and tape off support edge where shear collar will contact the support.

2. Mix only enough resin and catalyst to install the shear collar. Collars over 3/8" thick will have to be done in

phases, allowing each phase to cure. After curing, rough up with sandpaper or grinder.

3. Wet out the shear collar mats one at a time. Do about 3 to 4 layers at a time.

4. Apply the resin coated mats to the prepared pipe area and flush to the support.

5. Gently using the fiberglass roller, roll out the fiberglass mat to remove air bubbles.

6. Wet out remaining mats and repeat steps 4 and 5.

7. More detail information is available upon request. Also Britt has trained personal that can field train your

personal to install shear collars and pipe field joints. QC inspectors are also available for inspections.

BASIC INSTALLATION PROCEDURE

.375

.375

.375

.375

.375

.375

.375

.625

.625

.625

.625

.625

.750

.750

33333333344466




35210


PIPE HARDWARE

SUPPORT NO.


BC-01

BC-02

BRITT can also supply you with Anvil type parts such as turnbuckles

all tread rods, clevis’s, clamps, U-bolts, supports for HDPE & steel pipe,

spring hangers , auxiliary steel and what ever hardware you might need

for your application.

HD-3

HD-2



35210

ebbritt engineering

P.O.Box 320325Birmingham, AL35232(205) 951-5691(205) 951-5601 FAXemail: [email protected] site: brittengineering.com

Experience First

FRP PIPING DESIGN MANUAL

2009


(205) 951-5691

Britt Engineering, Inc.

P.O.Box 320325

Birmingham, Al

35232-0325 SDT-1

SUPPORT NO.Support Design Tips

FOWARD

This catalog presents a complete line ofsupports that was developed specificallyfor Fiberglass Reinforced Plastic (FRP)Pipe

When deviations to catalog standards arerequired, britt engineering is prepared toprovide design assistance and is equippedto furnish any specials that might berequired. britt engineering

The supports shown in this catalog areintended for installation and service asdesigned and specified herein.

. Many of the design features have beenthe result of suggestions from designengineers and construction people who havedetermined how improvements would makethe design and installation easier and faster.This family of designs is 18 years old and yetcontinues to grow and improve because welisten to the people who use them.

In the late 60's and early 70's, FRP materialswere being developed that would propel themarket of FRP pipe to new heights. FRP wasbeing specified in new applications where onlyspecialty alloys had been used and, as theapplications expanded, FRP was becoming thec o m p l e t e p r o b l e m s o l v e r. R e s i nmanufacturers were developing new Polyesterand Vinyl Esters. Fabricators were developingmanufacturing methods that improved qualityand reduced costs. In 1974 reports indicatedthat corrosion applications of FRP was to bethe growth industry of the future but about thatsame time some users were finding thatfrequent piping failures were causing concern.

One of the major manufacturers of resinsdetermined that most of the piping failurescould be eliminated through the use of propersupports, guides and anchors. The technicalinformation presented in this catalog is theresult of the cooperative effort of thismanufacturer and an engineering firm thatresulted in the installation of a completelysuccessful system that used FRP almostexclusively. These principles of pipe designalong with the supports in this catalog havebeen used in thousands of piping systems withcomplete success.

is continuallycooperating with engineers, designers, andconstruction personnel in the specification ofhangers and supports, and will assist in the

interpretation of applicable piping codes. Allsupports are manufactured in the US usingdomestic materials only.

britt engineering supports are almost alwaysmade to order since the outside diameter ofFRP pipe varies depending on themanufacturer, wall thickness, and corrosionliner thickness. Being custom made it isimportant to order the supports as early in theschedule as possible. The company will workclosely with your engineering and purchasingdepartment to insure the best possible fit up ofsupport to pipe and that schedules are met.

Exceedingsupport spans, hanging one pipe beneathanother, lack of component support andattempting to modify supports are someexamples of misapplication. If there is aquestion about application, call brittengineering. Our supports are manufactured tocomply with strict standards and care must beexercised to prevent misuse.

Supports for FRP Piping


(205) 951-5691


P.O.Box 320325

Birmingham, Al

35232-0325 SDT-2


CHOOSING SUPPORTS

Notes:

The following notes concerning the design andinstallation of FRP pipe and supports areprovided as a help to the designer or engineer.These design notes are intended to serve as aguide to the proper use of the supportsdescribed in this catalog and while it isimpossible to cover every piping condition,experience indicates that approximately 95%of the support requirements can be metthrough the use of these standard designs. Ifthe designer is faced with special conditionswhere a special design might be required heshould contact britt engineering for assistance.

The principles of design and analysis for FRPpipe differ considerably from the principles ofdesign for metallic pipe. The analysis of steelpipe normally begins with maximum flexibilityand the final support-guide-anchor designends when allowables are achieved. Whendealing with FRP pipe, the analysis normallybegins with a fully anchored system and thefinal support-guide-anchor configuration isestablished when the minimum stresscondition is reached (based on the availablestructural steel).

The fully anchored FRP piping system is oftenreferred to as an anchor to anchor system.This simply means that an anchor is placed at

each end of a straight run of piping. The pipe isrestrained by the anchors from growingthermally and is guided to prevent buckling.This arrangement is never considered withmetallic pipe but the low compressive modulusof FRP allows anchoring. The anchor loadsare normally less than 1/60th that of steel butmust be considered in the structural design ofthe support system, especially in largediameter pipe.

Many vendor catalogs include tables that thedesigner can use to determine support, guidesand hanger spacings. The spacings areusually based on a specific gravity of 1.2, aliquid temperature of 160 or 180 degrees F,and a limited deflection of 1/2". Thisinformation is useful for estimating but in mostinstances the spacings are not based on totalpipe stress. Very seldom is pressure stressconsidered in the derivation of these tables. InFRP piping systems it is very important that thetotal stress be considered when selectingsupport spans. By using the equationspresented In the technical section of thiscatalog the designer can accurately definesupport and guide spacings and be assuredthat the pipe is designed to operate within thespecified allowable stress.

The use of the procedures outlined in theTechnical Section of this catalog will

Review piping specifications.

Review piping drawings.

Review structural drawings

Review valve and fitting specifications.

Locate possible hanger locations.

Analyze thermal movement, stress and flexibility

of the piping system.

Calculate hanger loads.

Select hanger types.

Check hanger clearance around existing piping

and equipment


(205) 951-5691


P.O.Box 320325

Birmingham, Al

35232-0325 SDT-3


CHOOSING SUPPORTS

greatly improve the reliability and service life ofany FRP piping system. The sameprocedures will work equally well with ductsystems. As these procedures were beingdeveloped it became evident that there wereno commercially available standard supportsfor FRP piping. Many different designs wereillustrated in many of the catalogs but a reviewof the designs indicated that additional workwould be needed to make them work. brittengineering developed a family of special FRPpipe support designs that was based on themaximum loads that might be expected in FRPpiping. This family of supports has been usedin almost every environment and in almostevery condition found in process industries.Over the past 18 years new designs have beenadded to expand the applications and the sizerange was extended to pipe diameters of 108"and 120".

When specifying the supports shown in thiscatalog the designer will recognize the ease ofapplication and will become familiar with theunique features that are important to thedesign of an FRP system. The long supportwith a full bonded liner eliminates failures dueto local stresses. The low profile of all brittengineering supports keeps the pipe close tothe structural steel thus reducing the size andamount of auxiliary steel. Selecting standardsgreatly reduces design time and thestandardization of supports reducesmanufacturing costs. Interchange ability andstandardization reduces or eliminates all fieldrework thereby reducing construction costs.Each support is clearly marked for easyidentification.

As a word of caution, the designer is remindedto call britt engineering when the need for sizesand loads exceed the support tables in thiscatalog. While britt engineering has otherstandards that have been developed forspecial applications, the use of these supportsmust be checked against actual conditions.

Duct systems can be supported using thesame basic designs shown in this catalog;however, since duct systems very seldomhave fluid loads, the supports can be muchlighter. When specifying supports for ductingsimply add a "D" to the Fig.No. (Fig.20"D"). All

installation dimensions remain the same.

The designer should review the followingdesign considerations to insure that allsupports are correctly used. If there are anydeviations from these standard practices anddesigns the designer should contact brittengineering.

1. - The designer mustspecify the maximum OD of the FRPpipe to insure proper support fit. Pipespecifications normally require the pipemanufacturer to maintain a tolerance+1/8" -0.0" on the OD and themanufacturer is required to state themaximum OD in his quotation. Thesupport will be manufactured to fit within1/16" of the maximum OD.

2. - Whensupporting pipe inside of a building, thebuilding steel will provide the easiestsupport points. If the support spacing isbased on the spacing of the structuralsteel, and is found to exceed thecalculated support spacing, use a slightly(1/16") thicker pipe wall and re-runspacing calculations. Continue addingwall thickness until the required span isreached or until added wall thicknessstarts to decrease span capability. If thepipe will not span, then intermediatesupports, requiring the addition ofauxiliary steel, are required. Of course acomparison of the increased pipe costvs. the cost of auxiliary steel will allowthe designer to decide whether a heavierpipe will offer advantages.

3. - Guides serveas supports and also provide lateralrestraint to prevent buckling of the pipewhen the pipe expands due to elevatedtemperatures. Smaller piping will requiremore frequent guiding and in somecases the use of guides may be requiredat every support point. Larger pipingmay require every other support point tobe a guide. Calculations should bemade to determine exact requirements.

FITUP of SUPPORT

LOCATION of SUPPORTS

LOCATION of GUIDES


(205) 951-5691


P.O.Box 320325

Birmingham, Al

35232-0325 SDT-4


CHOOSING SUPPORTS

5. - FRP anchors aredesigned to lightly grip the pipe and arenever to be allowed to clamp the pipewith any excessive force. The anchor isfixed to the pipe by applying shearcollars, or FRP bands to the pipe oneither side of the anchor. Except for veryunusual cases the collars are applied inthe field after the anchor has beeninstalled. The collars are built up oflayer's of 1-1/2 oz. mat to a thicknessthat allows the anchor to bear against thecollar. See Fig.130

6. - Vertical runs ofpipe inside of a building normally aresupported on floor sleeves or off of curbssurrounding a pipe chase through thefloor. Riser supports or riser guideswhen required, are fixed to the pipe usingthe same shear collars as used withanchors, however the collar need only beapplied to the top side of the support sothat the weight of the riser can be carriedby the riser support. The rule for riserguide spacing is the same as otherguides unless the pipe is subjected towind loads where more frequent guidingis required. It is important to note thatloads for riser supports can be very high,especially in large diameter pipe. Loadsin excess of support ratings will requirespecial designs and should be brought tothe attention of britt engineering

7. -Special supports are used toaccommodate up to 4" of insulation. Inall except very special cases thesupports, anchors, and guides areattached to the pipe and are notdesigned to clamp or support the outsideof the insulation. When heat tracing isrequired the tracing passes outside of thesupport. *** Important *** If heat tracingis required contact britt engineering forspecial details and designs.

8. - It is veryimportant that all valves and inlinecomponents be supported independentlyof the pipe. In some instances it isnecessary to anchor the component

where heavy actuator's are cantileveredoff of the valve or component or whereexternal loads or dynamics mightdamage the pipe. Components invertical and horizontal pipe runs requiresupport although components in verticalruns may not require independentsupport of each component,

9. - The thermal expansion ofFRP is two to three times that of steeland requires special attention especiallywhere a fully anchored system is notused. Expansion joints and expansionloops are sometimes specified but theseadd a weakness to the system.Expansion loops in addition to addingextra piping, will add as many as fourfittings and at least eight more joints.Each joint is an additional point ofweakness. If lack of structural restraintpresents a problem where anchor loadsmight preclude the use of the anchoredsystem, there are several other designmethods that can be employed, but inmost cases the anchored system can beincorporated. The description of theother design methods are beyond thescope of this manual because these arespecial cases. If there is a problem inusing the anchored technique call brittengineering and we will be glad todiscuss specific applications.

10. - The standard coatings forbritt engineering supports is either a highquality prime coat that is applied by spraycoating, or hot dip galvanize. Paintsystems are in compliance with EPAregulations regarding VOC andhazardous materials. It is very importantthat the designer select a corrosionresistant coating that will withstand theenvironmental conditions in the areawhere the pipe supports are to beinstalled. If special high performancecoatings are required these should bespecified in the purchase documents.britt engineering is able to provide anycoating system that might be requiredand can also provide assistance in theselection of special coatings

FIXING of ANCHORS

RISER SUPPORTS

SUPPORTS for INSULATED PIPE

COMPONENT SUPPORTS

EXPANSION

COATINGS


(205) 951-5691


P.O.Box 320325

Birmingham, Al

35232-0325 SDT-6


CHOOSING SUPPORTS


(205) 951-5691


P.O.Box 320325

Birmingham, Al

35232-0325 TS-1

SUPPORT NO.Design Considerations for FRP Piping Systems

TECHNICAL SECTION

Background Mechanical Properties

The use of fiberglass reinforced plastic (FRP)in the construction of pipe for process pipingsystems is becoming more and more popular.The possibilities of its utilization in new andunique ways have outgrown the available bodyof knowledge necessary to assure its properapplication. The shared interest amongdesigners is to extend the range and quality ofthose and other new applications. There aremany years of practical experience in everyarea of FRP application, yet there is littlepublished data that would allow an engineer toestablish basic ground rules for the design ofan FRP process piping system. Recently,there has been tremendous growth in the useof FRP in piping systems and it appears thatthis growth will continue.

The purpose of this report is to present thebasic principles that have been usedsuccessfully to design FRP piping systems andalso to describe problem areas that havecaused difficulty. The main emphasis of thisreport is toward piping design rather thanmaterial selection. The task of materialselection has been much simplified through theefforts of resin suppliers who provide completecorrosion data for the proper selection of aresin system. Most resin suppliers will alsoprovide case histories detailing the behavior oftheir products in almost every environment andapplication.

After the selection of a resin system, adetermination as to the type of pipe must bemade. There are three major categories ofFRP pipe construction. They are: (1) contactmolded, (2) filament wound, and (3)centrifugally cast. The mechanical propertiesof the pipe are closely linked to the method offabrication and those properties varyconsiderably among the three types.

Despite conjecture as to the advantages anddisadvantages of each type of pipeconstruction, it has been found that any of thethree can be utilized if the pipe is of high qualityand if the system has been properly designedand supported. The specific mechanicalproperties of the pipe selected are incorporatedinto the design of the system. This includes thelocation and type of support. The mechanicalproperties inherent to the method of pipefabrication are discussed in a later section.

The most important factor in the design of apiping system is the determination of themechanical properties of the pipe over theoperational temperature range of the system.The catalogs for many pipe manufacturers listthe range of properties for various laminates,but very few provide performance data atelevated temperatures. The equation which isused to determine the design aspects of anystructural system utilizes factors for themechanical properties under the expecteddesign conditions, including temperature.Without this information, the designer isseverely handicapped.

Design Considerations forFRP Piping Systems


(205) 951-5691


P.O.Box 320325

Birmingham, Al

35232-0325

SUPPORT NO.

At

E

I

(2)

T

W

GUIDE SPACING REQUIREMENTS:

EULER EQUATION FOR COLUMNSPIN ENDED

L =G

LG

A T (2)t

�2 I

WHERE:

= CROSS-SECTIONAL AREA, TOTAL WALL, in.2= MOMENT OF INERTIA, STRUCTURAL WALL, in.

4

= COEFFICIENT OF EXPANSION, in./in.- F

= FACTOR FOR ECCENTRICITY OF LOADING ORDEVIATION FROM PIN COLUMN

= T - T FOP INS,

= GUIDE SPACING ft.

= YOUNG'S TENSILE MODULUS AT OPERATING

TEMP., lb/in.2

LG

L

L

MMAX

OFF-SET LEG REQUIREMENTS:(Lo)

A. STRESS LIMITED (CANTILEVER BEAM WITH LOADAT FREE END)

B. BENDING MOMENT LIMITEDUSE

LARGESTVALUE

L =O

L =O

n

MMAX

3 L E DO

6 L E I

Do

n

WHERE:

= THERMAL EXPANSION = L , in. (12)r

= PIPE OUTSIDE DIAMETER, in

= NET ALLOWABLE STRESS

= MAXIMUM ALLOWABLE BENDING MOMENT,(MANUFACTURER'S TEST DATA)

in.-lb

= LONGEST RUN INTO ELBOW. (ft. in.)

T

L

Lo

L

r

r

FIGURE 5 - Offsets

112

112

112

ANCHOR LOAD

FA = t T + fA E T P A

At

E

I

T

P

W

Af

S

As

SUPPORT SPAN REQUIREMENTS:A. DEFLECTION LIMITED,

B. STRESS LIMITED

USESMALLEST

VALUEn = tu - p5

L =S

L =S

4

W

W

460.8 E I

.67 n S

n

tu

p

y = 1/2 INCH

THERMAL LOAD

WHERE: WHERE:

FIGURE 4 - Support Spans.

NOTE: ANCHOR LOAD IS INDEPENDENT OF PIPE LENGTH

PRESSURELOAD

= CROSS-SECTIONAL AREA, TOTAL WALL, in.2

= MOMENT OF INERTIA, STRUCTURAL WALL, in.4

= MAXIMUM OPERATING PRESSURE, lb/in.2

= WEIGHT/FOOT.PIPE + FLUID, lb/ft.

= NET ALLOWABLE STRESS, lb/in.2

= ULTIMATE TENSILE STRESS, lb/in.2

= PRESSURE STRESS,

= FLOW AREA, =

= SECTION MODULUS, STRUCTURAL WALL, in.3

= AREA, STRUCTURAL WALL

4

A t

= T - T , FOP INS

= THERMAL COEFICIENT OF EXPANSION = YOUNG'S TENSILE MODULUS AT OPERATING

TEMP., lb/in.2

D i2

P As

LS

y

FIGURE 3 - Anchor loads

Support Design

112

FIGURE 6 - Guide Spacing

FA FA

Design Considerations for FRP Piping Systems

TECHNICAL SECTION TS-2


(205) 951-5691


P.O.Box 320325

Birmingham, Al

35232-0325

SUPPORT NO.

Figure 1 shows the change inm o d u l u s a t e l e v a t e dtemperatures for two filamentwound polyester pipes. This typeof data is required in systemanalysis if the design is to besound.

1.0

.75

.50

.25

050 100 150 200

OPERATING TEMPERATURE F

ET

EN

SIL

EM

OD

UL

US

x1

0P

SI

t6

Heavy Wall Pipe

Thin Wall Pipe

FIGURE 1 - Tensile modulus, E vs temperature, Ft

Comparisons

Contact Molded.

Filament Wound.

Centrifugally Cast.

The following compares and contrasts thedesign features and advantages of the threetypes of FRP pipe:

The high resin to glass fiberratio of this pipe makes it ideal for highlycorrosive fluids. In order to meet the strengthrequirements in the hoop direction, it usuallyhas a thicker wall than the other types of pipe.For this reason, it is heavier. Also, since it isvirtually hand made, it is more expensive.Strength in the axial direction is higher thanfilament wound pipe. Because the pipe ishand made, i t is subject to widermanufacturing tolerances than the other typesof pipe. This is especially important to thesupport designer who is responsible for thedesigned fit of supports. Contact molded pipeis highly recommended for use where it mightbe subject to a severe exterior environment.Fittings are normally joined to the pipe usingthe butt and strap method.

A high glass content andprecise fiber orientation make this type of pipeideal for pressure applications. Machines areused more in its fabrication so the tolerancesare closer, the mechanical properties moreconsistent, and the production cost is lowerthan for contact molded pipe. Due to the lowresin to glass fiber ratio, a corrosion liner of aminimum 100 mils should be provided. Since

the axial strength of filament wound pipe isless than that for contact molded pipe, at thesame pressure rating, the filament wound pipewill require a much closer support spacing.This is due to the thinner wall common withfilament wound pipe. The preferred method ofjoining fittings and pipe is the butt and strapmethod, although several manufacturersprovide tapered bell and spigot ends forjoining pipe and fittings. The bell and spigotjoint is an adhesive joint that is dependent onthe glue line between the bell and spigot.

This type of pipe isalmost fully machine made and it provides themost consistent mechanical properties andthe closest tolerances. It has a lower glassfiber content than filament wound pipe andfeatures higher corrosion resistance. Thesmooth outside diameter also facilitates amore consistent support design. Cast pipe,due to fiber orientation and higher glasscontent, has a higher axial strength than eitherthe filament wound or contact molded pipe.Cast pipe has an unreinforced corrosion linerwhich is susceptible to damage by impact, butif the pipe is properly handled and supported, itshould pose no problems. Fittings arenormally of the socket weld type that can beover wrapped if added joint security is desired.However, with correct installation proceduresand inspection, the over wrap is generallyconsidered unnecessary.




(205) 951-5691


P.O.Box 320325

Birmingham, Al

35232-0325

SUPPORT NO.

Design Considerations

Design Techniques

Contact molded FRP pipe, made according toPS 15-69, is normally rated by pressure inincrements of 25 psi up to 150 psi. Standardmachine made pipe does not follow this type ofrating and the designers should refer to theultimate pressure rating listed in themanufacturer's catalog. It is important to notethat these ratings are based on the allowablepressure of a continuously supported pipesubject to pressure stress only. Since pipingsystems are almost never continuouslysupported, the stresses of bending must beconsidered when determining the allowableworking pressure of an FRP pipe. Theequations presented in the section on SupportDesign take these stresses into account.

Wall thicknesses are based on a 10:1 safetyfactor in the hoop direction and it is customaryto use a 5:1 or 6:1 safely factor in the axialdirection. By maintaining these safety factorsin the design, stress risers in elbows and otherfittings will be within the allowable stress limit.

The method of design layout preferred by brittengineering is an anchor to anchor design.This design method can be economical andoffers many advantages. The anchor toanchor system is more rigid and lesssusceptible to damage due to dynamicloading. This system also provides a meansfor controlling expansion (thermal andpressure), thereby reducing the length ofoffsets and eliminating the need for expansionjoints. Anchors are placed on either side ofevery change in pipe direction and as near tothe fitting as possible. The amount ofstructural steel required to absorb the loadsimposed on the anchors can be minimized bykeeping the pipe elevation close to the steeland by utilizing tension members betweenanchors. It is important to recognize that thepipe must be guided between anchors toprevent buckling. In cases where there arelong straight runs, anchors should be placedno more than 150 to 200 feet apart.

When the anchor to anchor design cannot beused and the pipe must be hung with rodhangers, a great deal of care should be takento ensure flexibility. However, a pumped

system that is too flexible will vibrate anddestroy itself if vibrations are within theresonant range. Excessive stresses can alsobe induced by wind loads. To reduce vibrationand wind load effects, the pipe should belaterally restrained at specified intervals alongthe pipe. These restraints should not belocated near changes in direction where offsetlegs are required for flexibility.

Many piping system failures that occur duringhydrostatic testing, or even after years ofservice, have been attributed to poorworkmanship. These failures are due to anoverstress condition which was caused byeither poor workmanship or unsatisfactorydesign. The task of the designer is toeliminate, as much as possible, the likelihoodof failure. With sufficient effort spent on thedesign and in the instruction of installationpersonnel, failures can be effectively reduced.

It is hoped that the design techniquespresented here will help to standardize aconservative design approach. Beyond this, agreat deal of work is necessary to standardizeinstallation techniques, especially themethods for fabricating joints.

In an effort to reduce the possibility of failure,the designer should seriously consider thefollowing:

Keep the pipe run away from high trafficareas where damage from equipmentimpact is likely.

Keep flange joints to a minimum.

Provide vents at each high point.

Provide drains at each low point or pocket.(Drains with blind flanges will allow the lineto be drained if repairs are necessary.)

Ensure that all supports, anchors, andguides are installed prior to the hydrotest.(This cannot be over emphasized since




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SUPPORT NO.

the pipe system can be severely damagedwithout proper pipe support.)

All valves and valve operators, orcomponents in the system, must beindependently supported.

Riser supports for long vertical runs shouldbe guided or restrained to reduce vibrationand wind load effects.

When setting up for hydrotesting, open all highpoint vents to remove all air and connect thepump to the lowest point in the system. (Thepump should be a small, positive displacementpump [3 to 5 gpm] and should be equippedwith a pressure regulator that will allow thesystem pressure to build slowly.)

With material prices and the cost of labor risingfrequently, a cost comparison between anFRP system and any other is meaninglesssince cost data is out of date before it isprinted. FRP is normally selected because ofits corrosion resistance, however oneimportant point that should be madeconcerning any comparison is that the totalinstalled cost be considered. Many studies donot include data on the support systemrequired for FRP pipe. This is because mostanalysis procedures tend to regard all pipingsystems as being supported in the samemanner and at the same relative cost. Inaddition, the cost of auxiliary steel, and thelabor necessary to install that steel, should beevaluated.

The service life of each system is an importantfactor and should be included in the evaluationif sufficient historical data can be obtained.Many designers would probably elect to usematerials other than FRP when the installedprice of the two systems is relatively close, butthe extended service life of FRP systems willusually be more favorable. Generally,experience at britt engineering has indicatedthat FRP systems are more economical thanother systems in pipe sizes above 4 incheswhere special metallic materials areconsidered.

There are very few codes or standardsapplicable to the design of FRP pipingsystems. The designer should be familiar withthe

, although itdeals mainly with metallic pipe it has beenexpanded to cover non-metallics includingthermoplastic and thermoset materials. Theonly other standard that could prove useful fordesign purposes is the

, which coverscustom contact molded FRP equipment. Thisdocument is no longer published by NPS butcopies can be obtained through some of theresin and glass manufacturers. The tables forpipe included in this Standard should be usedwith care.

The American Society for Testing andMaterials (ASTM) has published standards for

. Thisdocument is a compilation of test proceduresand methods for establishing material andmechanical properties for plastics used inpiping.

A number of codes and standards are beingdeveloped to promote standardization of theproduct but they are not available at this time.One excellent guide that is available is a bookentitled "Corrosion -- Resistant PlasticComposites in Chemical Plant Design" by J.H. Mallinson, published by Marcel Dekker,New York , 1988. Another book that providesgood overall coverage of the use of FRP is"Fiberglass Reinforced Plastics Deskbook"by N.P. and P.N. Cheremisinoff, Ann ArborScience, Michigan, 1978.

that is a documentthat was written by the Fiberglass PipeInstitute, New York. The handbook is acompilation of technical sections coveringabove and below ground piping systems andwhile it is an excellent reference for pipingdesign, the methods of analysis and design ofsupports presented in this book are not thesame as recommended in this catalog.

Economic Considerations

Applicable Codes and Standards

American National Standard Code forPressure Piping (ANSI) B31.3

NBS VoluntaryProduct Standard PS 15-69

Plastic Pipe and Building Products,Section 8, Volume 08.04, 1993

The Composites Institute of the Society ofPlastics Industry published a "FiberglassPipe Handbook" in 1989




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tThe use of expansion joints and expansionloops are very rarely used in practice and thesupports recommended in the handbookshould not be used except in very light dutyservice.

The preliminary piping layout for FRP piping isthe same as for any other system (Figure 2).Once a general piping arrangement has beenselected, an isometric of the system should bemade and the following steps taken:

Locate available support steel andestablish the location of additional supportsteel as required. Existing bridges, piperacks and building structural steel willestablish the available support spacing.

Locate anchors at each change in pipedirection and as close as possible toelbows.

Locate riser supports and componentsupports. Riser supports can betentatively located on 10 foot centers untilcalculations are made.

Establish support design criteria and pipewall thickness required using theequations in the section on SupportDesigns factor ing the operat ingtemperature and pressure of the system.An iterative process is employed to obtainwall thickness and to define acceptablesupport spans.

Tabulate support design criteria shown inTable 1 and rearrange support spacingand anchor locations on the isometric tomeet design criteria. Add guides atlocations determined in the table.

Check offset leg requirements betweenanchors at directional changes. Relocateanchors as required to meet offsetrequirements.

Rearrange riser support locations. Thedistance between centers should notexceed the guide spacing. In areas whereoffset leg requirements cannot be met,consideration should be given to reroutingthe pipe to provide more flexibility.

Layout of Piping Systems

Fig. 2 Typical pipe run

Table 1 (Sample Only)

Ly

LO

LG

Ls

Ls

NominalPipe Size

4"6"

10"12"

Wall Thickness(Inches)

.202

.202

.250

.265

Support Span(Inches)

8.39.6

12.313.1

Offset Leg(Inches)

.47 L

.64 L

.82 L

.90 L

Guide Spacing(Inches)

11.516.728.033.7

Anchor Load(Inches)

350052009842

12250

FA

FA

FA

LR LO

FA

FA

LG

LG

LA

LA

LA

(150 ft)

(150 ft)

ANCHOR

GUIDE

SUPPORT

RISER SUPPORT

ANCHOR FORCE

ANCHOR SPACING

GUIDE SPACING

SUPPORT SPACING




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Vibration

Water Hammer

Cavitation

Pump or equipment vibrations are usuallyabsorbed by the piping system; however, it isa good practice to use an expansion joint withtie rods at the pump discharge if thedischarge pipe can be anchored. Care mustbe exercised to insure that the pump iscapable of handling the thrust loads and/orthermal loads that are developed by thefittings.

There are several recommended methods forreducing water hammer effects. There areseveral air chamber designs available that willhelp reduce shock but the best method is todesign the system so that slugging does notoccur. Slowing the response time of thecontrol valves to a minimum of eight to tenseconds will usually achieve this.

This is caused by a restriction in the line, suchas a control valve, that causes a drop in localpressure due to high flow velocities throughthe restriction. Gate valves should be usedwhere possible instead of butterfly valves.

The experience at britt engineering haspositively shown that the design approachused in this report will provide a satisfactorysystem if reasonable care and control isexercised when the pipe is installed. Thesupports, guides, and anchors shown in thiscatalog have been designed to match theanalysis and support requirements for FRPpipe and have been proven through 18years of service. The finish and/or coatings onthe support should be selected to match theenvironmental conditions of the processsystem and should be specified by thedesigner. Standard finishes for brittengineering support are either epoxy primeror hot dip galvanize. Special coatings areavailable and britt engineering can assist thedesigner in the selection of the most costefficient coating system.

Conclusions

Suggested Supports for FRP Pipe

Guide

Anchor

Hanger

Support

ComponentSupport




britt support cat 9710

Documents

hot dip galvanize

ring hub reinforcement

ing hub reinforcement

glass fiber

fiberglass

full elastomer

providing

hd hex nut